package com.itheima.controller;


import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.utils.JwtUtil;
import com.itheima.utils.Md5Util;
import com.itheima.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.http.ResponseEntity;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;


    @PostMapping("/register")
    public Result register( @Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {




        User u = userService.findByUserName(username);


        if (u == null) {


            userService.register(username, password);



            return Result.success();
        } else {
            return Result.error("用户名已被占用");

        }


    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {

        User loginUser = userService.findByUserName(username);


        if (loginUser == null) {
            return Result.error("用户名错误");

        }

        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())) {

            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);

            ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
            operations.set(token,token,1, TimeUnit.HOURS);
            return Result.success(token);
        }


        return Result.error("密码错误");

    }

    @PostMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/) {

//        Map<String,Object> map =  JwtUtil.parseToken(token);
//        String username = map.get("username").toString();
        Map<String,Object> map =  ThreadLocalUtil.get();
        String username = map.get("username").toString();
        User user = userService.findByUserName(username);

        return Result.success(user);

    }

    @PostMapping("/update")
    public Result update(@RequestBody @Validated User user) {
        userService.update(user);

        return Result.success();
    }

    @PostMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {

        userService.upadateAvatar(avatarUrl);

        return Result.success();
    }

    @PostMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token) {
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");
        }


        Map<String,Object> map = ThreadLocalUtil.get();
        String username = map.get("username").toString();
        User loginUser = userService.findByUserName(username);
       if(loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))) {
           return Result.error("原密码不正确");
       }

       if(!rePwd.equals(newPwd)) {
           return Result.error("两次填写的新密码不一样");
       }

       userService.updatePwd(newPwd);

        ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);

       return Result.success();

    }




}
